1331250512642 has 4 divisors (see below), whose sum is σ = 1996875768966. Its totient is φ = 665625256320.

The previous prime is 1331250512623. The next prime is 1331250512693. The reversal of 1331250512642 is 2462150521331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1329111542641 + 2138970001 = 1152871^2 + 46249^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332812628159 + ... + 332812628162.

Almost surely, 2^{1331250512642} is an apocalyptic number.

1331250512642 is a deficient number, since it is larger than the sum of its proper divisors (665625256324).

1331250512642 is an equidigital number, since it uses as much as digits as its factorization.

1331250512642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665625256323.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 1331250512642 in words is "one trillion, three hundred thirty-one billion, two hundred fifty million, five hundred twelve thousand, six hundred forty-two".